http://www.cnr.it/ontology/cnr/individuo/prodotto/ID175084

Initial oxidation of a Rh(110) surface using atomic or molecular oxygen and reduction of the surface oxide by hydrogen (Articolo in rivista)

Type

Label

Initial oxidation of a Rh(110) surface using atomic or molecular oxygen and reduction of the surface oxide by hydrogen (Articolo in rivista) (literal)

Anno

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

Alternative label

Dudin, P (1); Barinov, A (1); Gregoratti, L (1); Kiskinova, M (1); Esch, F (2); Dri, C (2,3); Africh, C (2,3); Comelli, G (2,3) (2005)
Initial oxidation of a Rh(110) surface using atomic or molecular oxygen and reduction of the surface oxide by hydrogen
in The journal of physical chemistry. B; American Chemical Society, Washington (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Dudin, P (1); Barinov, A (1); Gregoratti, L (1); Kiskinova, M (1); Esch, F (2); Dri, C (2,3); Africh, C (2,3); Comelli, G (2,3) (literal)

Pagina inizio

Pagina fine

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

Rivista

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

Note

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

(1) Sincrotrone Trieste, I-34012 Trieste, Italy; (2) Lab TASC INFM, I-34012 Trieste, Italy; (3) Univ Trieste, Dept Phys and Ctr Excellence Nanostructured Mat, I-34127 Trieste, Italy (literal)

Titolo

Initial oxidation of a Rh(110) surface using atomic or molecular oxygen and reduction of the surface oxide by hydrogen (literal)

Abstract

The formation conditions, morphology, and reactivity of thin oxide films, grown on a Rh(110) surface in the ambient of atomic or molecular oxygen, have been studied by means of laterally resolved core level spectroscopy, scanning tunneling microscopy and low energy electron diffraction. Exposures of Rh(110) to atomic oxygen lead to subsurface incorporation of oxygen even at room temperature and facile formation of an ordered, laterally uniform surface oxide at similar to 520 K, with a quasi-hexagonal structure and stoichiometry close to that of RhO2. In the intermediate oxidation stages, the surface oxide coexists with areas of high coverage adsorption phases. After a long induction period, the reduction of the Rh oxide film with H-2 is very rapid and independent of the coexisting adsorption phases. The growth of the oxide film by exposure of a Rh(110) surface to molecular oxygen requires higher pressures and temperatures. The important role of the O-2 dissociation step in the oxidation process is reflected by the complex morphology of the oxide films grown in O-2 ambient, consisting of microscopic patches of different Rh and oxygen atomic density. (literal)

Editore